{"id":5712,"date":"2026-10-22T07:18:52","date_gmt":"2026-10-22T07:18:52","guid":{"rendered":"https:\/\/unitedebike.com\/?p=5712"},"modified":"2026-10-22T07:18:55","modified_gmt":"2026-10-22T07:18:55","slug":"dual-motor-electric-trike-apta","status":"publish","type":"post","link":"https:\/\/unitedebike.com\/fr\/dual-motor-electric-trike-apta\/","title":{"rendered":"Dual Motor Electric Trike: Why the UM Apta Splits the Job in Two"},"content":{"rendered":"

R\u00e9ponse courte :<\/strong> The UM Apta carries two motors that never run at the same time. A 120 N\u00b7m mid-drive handles every forward metre through an internally geared hub; a separate front hub motor handles reverse on a button. That is not a compromise on all-wheel drive \u2014 it is the answer to a coordination problem that stops most mid-drive trikes from reversing at all, which is where senior trike sales quietly die.<\/p>\n\n\n\n

\"Tricycle<\/figure>\n\n\n\n

Why an electric trike with reverse exists at all<\/h2>\n\n\n\n

Watch a trike demonstration end badly and it is almost never about power. The rider manages the hill. What defeats them is a parking bay, a lift, or the end of a narrow garden path \u2014 the moment the vehicle has to go backwards.<\/p>\n\n\n\n

A 55 kg trike with a seated rider cannot be shoved backwards by that rider. On two wheels you put a foot down and walk it. On a semi-recumbent trike the rider is low, belted into a supported seat with a backrest, and their feet are out in front on a boom. There is no way to get leverage. For the older rider this category exists to serve, that is not an inconvenience; it is the reason the sale does not close.<\/p>\n\n\n\n

Published comparisons of trike drive systems rarely mention it. Torque, range and motor brand get columns. Reverse gets nothing \u2014 and it is the single most common reason a configuration gets eliminated in a dealer showroom. UnitedMobility’s read of the senior channel is that an electric trike with reverse is not a premium feature but a precondition for the indoor-storage half of the market.<\/p>\n\n\n\n

Why two motors instead of one bigger one<\/h2>\n\n\n\n
\"Split-function<\/figure>\n\n\n\n

Because the obstacle is structural rather than a shortage of power.<\/p>\n\n\n\n

A mid-drive sends its torque through the chain and a freewheel. A freewheel will not drive a wheel backwards \u2014 that is what a freewheel is for. So no amount of extra torque makes a mid-drive trike reverse. You either add hardware or you accept that the vehicle only goes forwards.<\/p>\n\n\n\n

Meanwhile the mid-drive is there for a good reason. On a delta trike \u2014 one wheel at the front, two at the rear \u2014 the rear axle carries a differential so both rear wheels receive drive while the outer one travels further through a turn. Once the differential occupies the rear axle, those wheels are no longer available for a hub motor, and drive has to reach the axle through a chain. As the reference account of tricycle drive arrangements<\/a> notes, trikes with a differential commonly use an internally geared hub as the gearbox in a mid-drive system. That is exactly the UM Apta<\/a> layout: Ananda M100 mid-drive, 250 W continuous, 120 N\u00b7m, through a Shimano 8-speed internal hub, onto a differential rear axle.<\/p>\n\n\n\n

So the forward drive is settled by the axle, and reverse needs a motor of its own. Hence two.<\/p>\n\n\n\n

Why the reverse motor sits on the front wheel<\/h2>\n\n\n\n
\"UM<\/figure>\n\n\n\n

This is the part worth explaining to your dealers, because it looks like an odd choice until you see the constraint.<\/p>\n\n\n\n

On a delta trike the front wheel is the only one not doing anything. It steers, it carries little weight, and nothing else is competing for its hub. The rear wheels are occupied by the differential. So the front wheel is the one place a second motor can go without redesigning the driveline.<\/p>\n\n\n\n

The usual objection to a front hub on a trike is traction: the rider’s mass sits rearward, so the front wheel is the lightly loaded end and the first to slip. That objection is correct \u2014 and it is why a front hub makes a poor primary<\/em> drive. For reverse it does not apply. Reverse happens at walking pace, on flat ground, over a couple of metres, with no gradient to climb. The traction available at the front wheel is more than enough for the job, and the job is all it has to do.<\/p>\n\n\n\n

Put differently: the weakness of a front hub motor is irrelevant to the only task it has been given. That is what makes the split sensible rather than a workaround.<\/p>\n\n\n\n

What a dual motor electric trike does not mean here<\/h2>\n\n\n\n

This needs saying plainly, because the phrase is used loosely in this category and a mis-sold expectation comes back as a warranty claim.<\/p>\n\n\n\n

Three different things get marketed as “dual”:<\/p>\n\n\n\n